GREGORY TRENT JR. WALKER (MD) – Orthopaedic Foot and Ankle Surgery Physician, NPI 1801250659
Orthopaedic Foot and Ankle Surgery Physician
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Profile Insights
NPPES metrics only — not quality of care.
780 ORTHOPEDIC SURGERY in WA
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Provider Addresses for GREGORY TRENT JR. WALKER (MD)
Fremont Street, Fox Point, Providence, Providence County, Rhode Island, 02906, United States
PROVIDENCE, RI 029063839
Phone: (323) 217-9993
Type: Mailing
University of Washington Medical Center - Montlake, 1959, Northeast Pacific Street, University District, Seattle, King County, Washington, 98195, United States
BOX 356500
SEATTLE, WA 981956500
Phone: (206) 543-3690
Type: Location
555 N ARLINGTON AVE
RENO, NV 895034724
Phone: (775) 786-3040
Fax: (775) 786-1358
Type: Mailing
6130 N LA CHOLLA BLVD STE 135A
TUCSON, AZ 857413557
Phone: (520) 881-1394
Fax: (520) 882-7464
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 52 Open Payments records for all available years, with a total value of $1,111.
Total Amount is formed as General ($1,111) + Research ($0) + Ownership ($0) = $1,111.
Last reported payment date: 2024-12-20 • Largest payer in this snapshot: Orthofix Medical, Inc. ($283).
Total Amount
$1,111
General + Research + Ownership
Payments
52
Total payment records
General Amount
$1,111
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-20
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Orthofix Medical, Inc. | $283 |
| Musculoskeletal Transplant Foundation Inc. | $177 |
| Smith+Nephew, Inc. | $149 |
| Stryker Corporation | $121 |
| ImpactOrtho, Inc. | $79 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2022-08-05
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20220805000609 | I | Orthopedic Surgery | AZ | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 93 | 93 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 83 | 54 | $0 |
| J3301 | Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 77 | 14 | $0 |
| 73610 | X-ray of ankle, minimum of 3 views | 73 | 59 | $0 |
| 73630 | X-ray of foot, minimum of 3 views | 71 | 58 | $0 |
Insurance plans in this area (ZIP 02906)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Cardiovascular Disease (Cardiology) | AZ | |
| - | AZ | |
| Internal Medicine | AZ | |
| U R O L O G Y | NC | |
| Nurse Practitioner | AZ | |
| Physician Assistant | AZ | |
| Family Practice | WV | |
| Interventional Cardiology, Internal Medicine | AZ | |
| N E U R O L O G Y | AZ | |
| - | AZ |
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